<template>
    <div class="list" ref="wrapper">
        <div >
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="hadleCityClick(item.name)">
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div 
                class="area" 
                v-for="(item,key) of cities" 
                :key="key"
                :ref='key' >
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom" v-for="k of item" :key="k.id" @click="hadleCityClick(k.name)">{{k.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script type="text/ecmascript-6">
 import Bscroll from "better-scroll"
 import {mapState , mapMutations} from 'vuex'
 export default {
    name:'cityList',
    mounted(){
        this.scroll = new Bscroll(this.$refs.wrapper)
    },
    data () {
        return {

        }
    },
    props: {
        cities:Object,
        hotCities:Array,
        letter:String
    },
    methods:{
        hadleCityClick(city){
            //this.$store.dispatch('changeCity',city)
            //this.$store.commit('changeCity',city)
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
    components: {

    },
    computed:{
        ...mapState({
            currentCity:'city'
        })
    },
    watch:{
        letter(){
            if(this.letter){
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    }
 }
</script>

<style lang="stylus" scoped>
    .border-topbottom
        &:before
            border-color:#ccc
        &:after
            border-color:#ccc
    .border-bottom
        &:before
            border-color:#ccc
        &:after
            border-color:#ccc
    .list
        overflow :hidden
        position:absolute
        top:1.68rem
        left:0
        right:0
        bottom:0
        .title
            line-height: 0.54rem
            background: #eeeeee
            padding-left:.2rem
        .button-list
            overflow :hidden
            padding:.1rem .6rem .1rem .1rem
            .button-wrapper
                float:left
                width:33.3%
                .button
                    text-align :center
                    margin:.1rem
                    padding:.1rem
                    border:.02rem solid #ccc
                    border-radius:.06rem
        .item-list
            .item
                line-height:.76rem
                color:#666
                padding-left:.2rem


</style>
